I notice this mostly on Discovery Inc. channels. At commercial breaks, a few frames of a commercial flash & then a loop of the same PSAs starts. It appears that either Dish or Discovery are blocking commercials from their network feed, and some times inserting a promo for some discovery channel program. Is Dish network black mailing advertisers? to pay again to have there commercials viewable on Dish? or Discovery likewise? Any body know what is going on?